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29
9.0
COMMISSIONING
9.2
Setting the Timer
The Electro-Mechanical Timer allows the central
heating system to be set every 15 minutes.
Using the three position switch the timer will allow
either constant operation, timed operation or central
heating off.
Move the switch button by sliding to the desired
position.
Three position switch
(Fig. 32a)
Constant (Top position):
The heating will
be on constantly irrespective of the position of the
tappets.The heating will be controlled by the main
thermostat on the appliance and/or any external
controls.
Timed (Central position):
The heating will
operate according to the position of the tappets and
be controlled as above.
0
Off (Bottom position):
No central heating.
Domestic hot water will operate on demand.
To set the time of day
Turn the timer outer bezel clockwise, to align the
pointer with the correct time to the nearest 15 minutes
ensuring that A.M./P.M. is considered.
Do not at any
time attempt to turn the bezel anti-clockwise.
To set the timed heating program
Decide which times of the day the central heating is
required.
The heating will operate when the white tappets are
set to the outer edge of the bezel.
To ensure the heating stays OFF set the required
tappets inwards towards the centre of the bezel.
Each tappet represents 15 minutes.
For example: If the heating is not required between
10 A.M. and 11 A.M. the four tappets anticlockwise
from the 10 A.M. will be set inwards (Fig. 32b).
2
3
4
5
AM
7
8
9
10
LIN
0
9
10
11
12
1
2
3
4
5
PM
7
8
9
10
11
12
1
2
3
4
5
AM
7
8
9
10
11
12
GRASSLIN
0
4
Constant
Time Pointer
Timed
Off
Rotate to adjust time
Off Position
On Position
Time Pointer
Fig. 32a
Fig. 32b
Publication No. 5116282